What is the best way to create a method that determines the height of a Binary Search Tree class? For instance: bst.height() would return 1 if it contains only 1 item; return 2 if it contains 3 items and is balanced, or return 3 otherwise; return 3 if it contains 4 items and is balanced, or return 4 otherwise. This may be a somewhat different implementation than usual.

The fastest way would be to update the height while you insert and delete.

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